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C. Paving The Way Towards Better Cement

Narrator: This is Science Today. A new type of cement, which is stronger yet more lightweight, has been developed at Los Alamos National Laboratory. Researcher Craig Taylor says the new process uses highly pressurized carbon dioxide to speed up a natural reaction which usually takes thousands of years.

Taylor: The oldest cements that are in the world today are either the dome of the Parthenon or the Great Wall of China. These cements are four thousand, plus or minus, couple hundred years old. They have not completely carbonated, so the dome of the Parthenon is getting harder and harder all the time.

Narrator: By speeding up the process, cements become geologically stable.

Taylor: So, we've made an improved product. Now, this has a lot of applications in both the construction industry as well as the nuclear industry because they're interested in storing nuclear waste in cemented waste form. And what they want to do is have something that is not porous.

Narrator: And definitely not gas forming. For Science Today, I'm Larissa Branin.